I have opportunity to drive two different 2018 Suburbans. Both have the 5.3L engine. The 2WD has the trailering package with the different final gear. The AWD/4WD one has the regular final gear ratio. The AWD seems to shift slower than the 2WD. Is this typical? I used to have a 2011 Denali AWD, and I felt it shifted slowly too. I'm wondering if it is in my head or if there is a difference or if there is a maintenance issue I need to handle on the AWD one.